使用pySerial包的完整例子

有人可以告诉我一个完整的Python示例代码，使用pyserial ，我有包，想知道如何发送AT命令，并阅读回来！

Answer 1

博客文章Python中的串行RS232连接

import time import serial # configure the serial connections (the parameters differs on the device you are connecting to) ser = serial.Serial( port='/dev/ttyUSB1', baudrate=9600, parity=serial.PARITY_ODD, stopbits=serial.STOPBITS_TWO, bytesize=serial.SEVENBITS ) ser.isOpen() print 'Enter your commands below.\r\nInsert "exit" to leave the application.' input=1 while 1 : # get keyboard input input = raw_input(">> ") # Python 3 users # input = input(">> ") if input == 'exit': ser.close() exit() else: # send the character to the device # (note that I happend a \r\n carriage return and line feed to the characters - this is requested by my device) ser.write(input + '\r\n') out = '' # let's wait one second before reading output (let's give device time to answer) time.sleep(1) while ser.inWaiting() > 0: out += ser.read(1) if out != '': print ">>" + out 

Answer 2

 import serial ser = serial.Serial(0) # open first serial port print ser.portstr # check which port was really used ser.write("hello") # write a string ser.close() # close port 

请使用http://pyserial.wiki.sourceforge.net/pySerial获取更多示例;

Answer 3

http://www.roman10.net/serial-port-communication-in-python/comment-page-1/#comment-1877

 #!/usr/bin/python import serial, time #initialization and open the port #possible timeout values: # 1. None: wait forever, block call # 2. 0: non-blocking mode, return immediately # 3. x, x is bigger than 0, float allowed, timeout block call ser = serial.Serial() #ser.port = "/dev/ttyUSB0" ser.port = "/dev/ttyUSB7" #ser.port = "/dev/ttyS2" ser.baudrate = 9600 ser.bytesize = serial.EIGHTBITS #number of bits per bytes ser.parity = serial.PARITY_NONE #set parity check: no parity ser.stopbits = serial.STOPBITS_ONE #number of stop bits #ser.timeout = None #block read ser.timeout = 1 #non-block read #ser.timeout = 2 #timeout block read ser.xonxoff = False #disable software flow control ser.rtscts = False #disable hardware (RTS/CTS) flow control ser.dsrdtr = False #disable hardware (DSR/DTR) flow control ser.writeTimeout = 2 #timeout for write try: ser.open() except Exception, e: print "error open serial port: " + str(e) exit() if ser.isOpen(): try: ser.flushInput() #flush input buffer, discarding all its contents ser.flushOutput()#flush output buffer, aborting current output #and discard all that is in buffer #write data ser.write("AT+CSQ") print("write data: AT+CSQ") time.sleep(0.5) #give the serial port sometime to receive the data numOfLines = 0 while True: response = ser.readline() print("read data: " + response) numOfLines = numOfLines + 1 if (numOfLines >= 5): break ser.close() except Exception, e1: print "error communicating...: " + str(e1) else: print "cannot open serial port " 

Answer 4

我没有使用pyserial，但基于http://pyserial.wiki.sourceforge.net/pySerial的API文档，它似乎是一个非常漂亮的界面。; 可能值得仔细检查一下设备/收音机的AT命令的规范，不pipe你正在处理什么。

具体来说，有些需要AT命令之前和/或之后的一段时间的静默才能进入命令模式。 我遇到了一些不喜欢读取的响应，没有一点延迟。